import { Inject, Provide } from '@midwayjs/core';
import { Context } from '@midwayjs/koa';
import { InjectEntityModel } from "@midwayjs/typeorm";
import { Repository, In } from "typeorm";
import { ConfigEntity } from "@entity/system/config.entity";
import { ListConfigDTO, CreateConfigDTO, UpdateConfigDTO } from "@dto/system/config.dto";
import { resBuild } from "@utils/resBuild";
import { checkKeyIsExist } from "@utils/serviceHelp";
import { getOperator } from "@utils";
import { DownloadExcelService } from "@service/common/downloadExcel";
import { RedisService } from '@midwayjs/redis';
import { RedisEnum } from "@utils/enum";

@Provide()
export class ConfigService {
  @Inject()
  ctx: Context;

  @Inject()
  redisService: RedisService;

  @InjectEntityModel(ConfigEntity)
  configEntity: Repository<ConfigEntity>;

  @Inject()
  protected downloadExcelService: DownloadExcelService;

  // 列表
  async list(queryParams: ListConfigDTO) {
    const queryBuilder = this.configEntity.createQueryBuilder('entity');
    if(queryParams.configName) {
      queryBuilder.andWhere(`entity.configName like "%${queryParams.configName}%"`)
    }
    if(queryParams.configKey) {
      queryBuilder.andWhere(`entity.configKey like "%${queryParams.configKey}%"`)
    }
    if(queryParams.configType) {
      queryBuilder.andWhere(`entity.configType = :configType`, { configType: queryParams.configType })
    }

    // 时间范围，包含全天
    if(queryParams["params[beginTime]"] && queryParams["params[endTime]"]) {
      queryBuilder.andWhere(`entity.createTime BETWEEN :beginTime AND :endTime`, {
        beginTime: queryParams["params[beginTime]"] + ' 00:00:00',
        endTime: queryParams["params[endTime]"] + ' 23:59:59',
      })
    }

    if(queryParams.pageNum && queryParams.pageSize) {
      queryBuilder.skip((queryParams.pageNum - 1) * queryParams.pageSize).take(queryParams.pageSize)
    }

    const [rows, total] = await queryBuilder.getManyAndCount()
    return resBuild.list(rows, total)
  }

  // 添加
  async create(config: CreateConfigDTO) {
    // 新增之前先判断是否已存在
    await checkKeyIsExist(this.configEntity,'configName', config.configName)
    const myEntity = this.configEntity.create(config);
    myEntity.setCreateBy(getOperator(this.ctx))
    await this.configEntity.save(myEntity);
    // 同时更细redis缓存
    await this.redisService.set(`${RedisEnum.SYS_CONFIG_KEY}${config.configKey}`, config.configValue);
    return resBuild.success()
  }

  // 删除
  async delete(configId: string) {
    const ids = configId.split(',').map(id => Number(id));

    // 同时删除redis缓存
    const delConfigList = await this.configEntity.findBy({
      configId: In(ids)
    })
    for(const item of delConfigList) {
      await this.redisService.del(`${RedisEnum.SYS_CONFIG_KEY}${item.configKey}`);
    }
    await this.configEntity.delete(ids);
    return resBuild.success()
  }

  // 修改
  async update(config: UpdateConfigDTO) {
    const myEntity = this.configEntity.create(config);
    myEntity.setUpdateBy(getOperator(this.ctx))
    await this.configEntity.save(config);
    // 同时更细redis缓存
    await this.redisService.set(`${RedisEnum.SYS_CONFIG_KEY}${config.configKey}`, config.configValue);
    return resBuild.success()
  }

  // 详情
  async detail(configId: number) {
    const detailInfo = await this.configEntity.findOneBy({
      configId,
    });
    return resBuild.data(detailInfo)
  }

  // 导出
  async export(queryParams: ListConfigDTO) {
    // 默认导出全部，去掉分页参数
    delete queryParams.pageNum;
    delete queryParams.pageSize;
    let headers = [
      { label: "参数主键", prop: "configId", },
      { label: "参数名称", prop: "configName", },
      { label: "参数键名", prop: "configKey", },
      { label: "参数键值", prop: "configValue", },
      { label: "系统内置", prop: "configType", },
      { label: "备注", prop: "remark", },
      { label: "创建时间", prop: "createTime", width: 25 },
    ];
    const { rows } = await this.list(queryParams)
    return this.downloadExcelService.downloadExcel({
      headers: headers,
      data: rows,
      sheetName: '参数配置',
    });
  }

  // 根据参数键名查询参数值
  async getConfigKey(configKey: string) {
    // 先从redis获取
    const redisValue = await this.redisService.get(`${RedisEnum.SYS_CONFIG_KEY}${configKey}`);
    if(redisValue) {
      // 如果获取到，直接返回
      return resBuild.success(redisValue)
    } else {
      // 如果未获取到，则从数据库获取，并添加到redis
      const detailInfo = await this.configEntity.findOneBy({
        configKey,
      });
      await this.redisService.set(`${RedisEnum.SYS_CONFIG_KEY}${configKey}`, detailInfo.configValue);
      return resBuild.success(detailInfo.configValue)
    }
  }

  // 刷新缓存
  async refreshCache() {
    const allConfigList = await this.configEntity.find();
    allConfigList.forEach((item) => {
      this.redisService.set(`${RedisEnum.SYS_CONFIG_KEY}${item.configKey}`, item.configValue);
    })
    return resBuild.success()
  }
}
